As one of its daily deals, 1Sale offers the ZyXEL AV Powerline Wall Mount Ethernet Adapter 2-Pack, model no. PLA4205KIT, for $39.99 with free shipping. That's tied with last week's mention and the lowest total price we could find by $25. (It's also tied as the lowest price we've seen for this kit.) These adapters use your existing electrical outlets to create a secure high speed building-wide network. They support up to 500Mbps data transfer rates. Deal ends today.